12/12/2025
Pontiac's beautiful rear spoiler for their new 1970 Trans Am became a point of contention with the folks at Chevrolet. GM divisions were all under one umbrella but they remained fiercely competitive with one another. When Pontiac was led by John DeLorean (1965-1969) he had insisted on not using Chevrolet parts, whether it was a piece of trim, upholstery, or a simple ashtray, DeLorean fought to keep Pontiac unique. Some of those battles were lost due to GM bean counter cost cutting, but DeLorean was proud of his Pontiac team and always considered Chevrolet his arch rival.
The design for the all-new 1970 Firebirds was nearly complete when DeLorean left to become Chevrolet general manager in early February 1969. His successor, James McDonald, would oversee the final touches on 1970 Firebirds before they were introduced in February 1970.
Vince Piggins was Chevrolet’s Product Promotion manager. When he saw Pontiac’s 1970 Trans Am rear spoiler he realized the rear spoiler Chevrolet designed for their 1970 Z/28, which was similar to their 1969 spoiler, was not going to provide much downforce for their SCCA Trans Am Series race cars. He approached his new boss at Chevrolet, John DeLorean, and they both agreed that Pontiac’s Trans Am spoiler was better looking and would provide far more downforce at the track. DeLorean called his successor over at Pontiac, James McDonald, and asked if Chevrolet could use the Trans Am spoiler. McDonald carelessly said “ok”, as long as Chevrolet designed different spoiler end caps to give the Camaro a different look. When word got back to Pontiac's engineers and stylists that Chevrolet was planning to use the Trans Am spoiler, they were understandably upset. Pontiac had invested a lot of time, testing, and tooling in that spoiler, and they weren’t going to let Chevrolet take it from them.
A Pontiac purchasing executive contacted A.O. Smith, the company that produced Trans Am rear spoilers for Pontiac, and informed them that under no circumstances could any parts or tooling be used by Chevrolet unless approved by Pontiac. Of course, the engineers, stylists, and marketing people at Pontiac were unaware that general manager James McDonald had given his verbal ok for Chevrolet to use the spoiler.
So Chevrolet got their Trans Am spoiler, but designing new end caps and setting up new tooling took time. Chevrolet began to produce 1970 Camaros offering the smaller “nub” rear spoiler until the new end caps were ready. Chevrolet's "Trans Am" spoiler (with different end caps) would be available under a COPO designation in mid-April 1970 and then would become a regular production option for 1971. - MCN